10 Most Polluted Regions in Indonesia This Morning (15/8)

Air quality in Kep. Riau this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Friday (August 15, 2025) at 08.00 AM WIB, it was revealed that the air quality index in Kep. Riau was 100.

According to the Directorate of Air Pollution Control of KLHK, ISPU is a dimensionless number used to describe the ambient air quality conditions at a certain location and is based on the impact on human health, aesthetic value, and other living things.

ISPU calculation is based on the measurement results of seven air pollutant parameters, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. The air pollutant parameter measurements are spread across 72 stations in various regions.

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Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the range of 0-50 indicates good air quality, the range of 51-100 means moderate air quality, and the range of 101-200 indicates unhealthy air quality that is detrimental to humans, animals, and plants.

Next, very unhealthy air quality in the range of 201-300 can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range of more than 300 can seriously harm health and requires quick handling.

Below Kep. Riau, Lampung ranks second worst in Indonesia with an air quality index of 96. Then, in the third position is North Sumatra with an air quality index of 94.

This means that no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Friday, August 15, 2025 at 08.00 AM WIB.

1. Kep. Riau: 100

2. Lampung: 96

3. North Sumatra: 94

4. Banten: 92

5. Riau: 91

6. DKI Jakarta: 90

7. South Sumatra: 89

8. West Sumatra: 87

9. Central Kalimantan: 86

10. Aceh: 85

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